package hcled

import (
    "Havoc/pkg/profile/yaotl"
)

type contextStringer interface {
    ContextString(offset int) string
}

// ContextString returns a string describing the context of the given byte
// offset, if available. An empty string is returned if no such information
// is available, or otherwise the returned string is in a form that depends
// on the language used to write the referenced file.
func ContextString(file *hcl.File, offset int) string {
    if cser, ok := file.Nav.(contextStringer); ok {
        return cser.ContextString(offset)
    }
    return ""
}

type contextDefRanger interface {
    ContextDefRange(offset int) hcl.Range
}

func ContextDefRange(file *hcl.File, offset int) hcl.Range {
    if cser, ok := file.Nav.(contextDefRanger); ok {
        defRange := cser.ContextDefRange(offset)
        if !defRange.Empty() {
            return defRange
        }
    }
    return file.Body.MissingItemRange()
}
